/*
 * Copyright 2011 Clean GWT
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.cleangwt.user.cellview.client;

import java.util.Arrays;

import com.cleangwt.json.client.SimpleObject;
import com.google.gwt.cell.client.CompositeCell;
import com.google.gwt.cell.client.HasCell;
import com.google.gwt.user.cellview.client.Column;

/**
 * A {@link Column} used for merging multi columns.
 * 
 * @author Jess
 * @version 1.0
 * @since 1.0
 */
public class CompositeColumn extends Column<SimpleObject, SimpleObject> {

  /**
   * Creates a composite column with the given columns.
   * 
   * @param columns the columns to be merged
   */
  @SafeVarargs
  public CompositeColumn(Column<SimpleObject, ?>... columns) {
    super(new CompositeCell<SimpleObject>(Arrays.<HasCell<SimpleObject, ?>> asList(columns)));
  }

  @Override
  public SimpleObject getValue(SimpleObject object) {
    return object;
  }

}
